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3 years ago

What is the slope of the line that passes through the points (8,4) and (20,-4)?

Mathematics

1 answer:

irga5000 [103]3 years ago

6 0

Answer:

for (8,4) is 2 and for (20,_4) is _5

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Jason and 4 friends went bowling. Three friends rented shoes for $2 each. The total cost to rent the shoes and the lane fees was

Art [367]

The answer would be $7.20

3 0

3 years ago

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PLEASE HEP ME QUICK!!!!: Tom travels between the two mile markers shown and then finds his average speed in miles per hour. Sele

slega [8]

Answer:

$speed=\frac{195\ miles}{3\ hours}$

$3\ hours=\frac{195\ miles}{speed}$

$3\ hours*(speed)=195\ miles$

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x -----> the distance in miles

y ----> the time in hours

$speed=\frac{x}{y}$

we have

The distance is equal to subtract 35 miles from 230 miles

$x=230-35=195\ miles$

The time is equal to subtract 1:30 pm from 4:30 pm

$y=4:30\ pm-1:30\ pm=3\ hours$

substitute in the formula of speed

$speed=\frac{195\ miles}{3\ hours}$

<em>Isolate 3 hours</em>

$3\ hours=\frac{195\ miles}{speed}$

<em>Isolate 195 miles</em>

$195\ miles=3\ hours*(speed)$

7 0

3 years ago

The difference between two rational numbers is always negative true or false?

Gennadij [26K]

Answer:

I feel that the answer is false.

Step-by-step explanation:

7 0

3 years ago

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What fraction equals 48% in it’s simplest form

dmitriy555 [2]

Answer:

12/25

Step-by-step explanation:

48% is equal to 48/100

This can be simplified by dividing both the numerator and denominator by 4.

48/4=12

100/4=25

8 0

3 years ago

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A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtain

slega [8]

Answer: 8359

Step-by-step explanation:

The formula for sample size needed for interval estimate of population proportion :-

$n=p(1-p)(\frac{z_{\alpha/2}}{E})^2$

Given : The significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}}=z_{0.025}=\pm1.96$

Previous estimate of proportion : $p=0.32$

Margin of error : $E=0.01$

Now, the required sample size will be :-

$n=0.32(1-0.32)(\frac{1.96}{0.01})^2=8359.3216\approx8359$

Hence, the required sample size = 8359

5 0

3 years ago